One of the most wonderful experiences I've enjoyed has been to visit the spa at Thereme Vals.
Vals is a little town in the canton Graubünden of Switzerland. More notorious locations of Graubünden would be StMoritz, Davos, Flims and Klosters. Vals instead is a pleasant little secret hidden at the end of a valley, reached through narrow roads winding their way up a steep alpine vista. It is the location of a thermal mineral water spring which is enjoyed around Switzerland in the form of bottled mineral water called 'Valser' but can be enjoyed much more in the form of a spa in an insiring building by architect Peter Zumthor.